There is a functionality in PST Flight Deck to import users in XLSX file for schedule groups function (Manage -> Schedule groups -> Import users).
This gives us the possibility to add the batch of the users specified in the XLSX file to created a scheduled group (e.g. schedule batch of the users for migration).
The XLSX file needs to have a proper syntax that contains three columns:
Here is an example of the proper syntax:
An example XLSX file is attached to this KB article too.
NOTE: Empty schedule group needs to be created before XLSX Import User can be use.